Muqumova, G., To’rayev, X., Mo’minova, S., Kasimov, S. and Karimova, N. 2024. 547-32.54-057:543.33 Spectroscopic analysis of a sorbent based on urea, formalin, and succinic acid and its complexes with ions of Cu(II), Zn(II), Ni(II): Spectroscopic analysis of a sorbent based on urea, formalin, and succinic acid and its complexes with ions of Cu(II), Zn(II), Ni(II). Scientific and Technical Journal of Namangan Institute of Engineering and Technology. 9, 1 (Mar. 2024), 131–137. DOI:https://doi.org/10.61151/stjniet.v9i1.324.